From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f45.google.com (mail-pj1-f45.google.com [209.85.216.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 95F2E2472AE for ; Sun, 16 Aug 2026 14:11:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786889508; cv=none; b=dcdJC3nhdoUXC7mephPj18WwUU5Q1gnensBvjVOT2dUf8LnNmS64rny3zX3CDU+TaGYF1fbLTAp2yofJsbiuH4+3jrffmbXdDqVa7zWRjelye8IfhULagVt6Kq+uXrdh6oeuYcUDbgisOza3Hvm3YoEMkyR/xhCayrHD2TiFXHQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786889508; c=relaxed/simple; bh=JvzbmD28/bNeGCCQoldoWDuq4Wtj8kCRwNsgVLm/HzA=; h=Content-Type:Mime-Version:Subject:From:In-Reply-To:Date:Cc: Message-Id:References:To; b=HNrEIUo1O0/q1VLlfhy1MApMXxL/MxmBzfkeiERLbqT1fC1uE6nES8numhLGZryw5kkrsaNIE5TeahlkGh1Nvh81ZogRVWUEXDzYVw5c2RkS+AHGQYv87Pv0PRR9OnuVA+ZMKrmKrQl3xGjwnhwGgmINnJE1hF3mlQkESAB0sFk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=komJFJSg; arc=none smtp.client-ip=209.85.216.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="komJFJSg" Received: by mail-pj1-f45.google.com with SMTP id 98e67ed59e1d1-382ef647e20so2374403a91.1 for ; Sun, 16 Aug 2026 07:11:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1786889507; x=1787494307; darn=vger.kernel.org; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:content-type:from:to:cc :subject:date:message-id:reply-to:content-type; bh=zAUnw4mdqI35ASBg3kZRAyJOQp+N9wA36536RXbz8QE=; b=komJFJSggft2Xix3MPZKmGjRxc8JR6U58fnJDg7XCwI5lBeWLz0mBPx8XUi+7aOVyO 1r9AuZg8o1jert1hUbvuWduN+9yHILmHk9PQ8wxTz29kkoupnzWooRdvosDCT0aLnVv0 hxwRQnFBRViewrRo1d0UgpOVwycvYqfmOup0tb71NdIDFkzbq3Cmkgbe/rE583hAsf4D 4SvGkLFSCmjlJooReTPIZfvAy5ankqUdX96F0/aiymLJEK4yquNrxLucPlPnC9Ukta8B e8j/BGCER9VE8CpBl6FbcFMsMoEZAoxamIOtU6xgCQ1ELs9Sf/e918vBVifXUxoMnEch hyHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786889507; x=1787494307; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:content-type:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=zAUnw4mdqI35ASBg3kZRAyJOQp+N9wA36536RXbz8QE=; b=rCNZzJdeXguuEufwZB5jYP79AdmiZ1GCxMuEC1SsVe6ny/m3uz19lY3N+TRAAOYlJt QZ98YYXqKXYzlT+6VoeMO7Y16r1qSE8vM2IZuZhPf9QyuAJwVlIfPhh13fQhOMpBT23x Fbt0Cdcu6v8kiTCflEujIxpABJSLcSa4ZzIF0LxDRCBaAElbUAKLzK0C+GYjgt263tn4 pQBMHBGLc19YaZlumHhptRVbCnWMPmcXPCcl4PmRx9RJN4YLNb9R8S7GBa2z3SHpebe8 gUX5Mr5201E/N0vWXkkeGsdG/i9rTDzuI2dLOW4kfOdjbGD6KykFPseQnHykvouv0daB Mlqw== X-Forwarded-Encrypted: i=1; AHgh+RqLFz5GAqNxIlas/GqT8GJZwkNffRUzsEApCijEi/qKsJpPx94GxOO9qpXqAIxsYUrsbW3Oz5s=@vger.kernel.org X-Gm-Message-State: AOJu0YyTWPaTYIVbHxFwId4pXE+X8FDfJ7ANOKfzJlMow0CTWju9nL/Q ifzKqZP8SkYt5e98Mk5p3RjWaayvZ9owkIfghlhS4BzxOpKdUUVSJub1xaRJsY83 X-Gm-Gg: AR+sD1084AM1midCWxiVckbFHr9Ypx+Pz9PuzpwLkz9Qog8yw8Nb1Y8+EDbBn2O030/ VrRq1lvJxlpwExG6YvgEt+M7FT4mvpIzO9y21Bq02oJ9bhqoKi4pRI9PUMJYTesI/z/Pj3oPQCV P5cNuZTQIRitKPEWBokcjIao/zhj975PzC6hnw7iiI/70j8YFHzublJHzxIFZikqlIZxbdZeBr7 IJ26BoK+C56AuzGzcjCObJNyAEVe/vUTj14cECw1I7R0s/2QkKdR7K4UPwoYbcCofhRLNHL+ci1 k5qRUs6TnB40vVZpV5MJKRVyozYw11eSiloAwYaxIhBUnVeU4Z9cuCprWerq1RabZ6mhEiYQiJY pkcUbosidVca4XSWggJv39uI6nVTqi17gx1zzmJy5xY7JL4TCRLhWxw4jx305QRLFgWw/aQeKBr 7QwZXO0Veza/cZnANEQ5jyHREAa1FM0S+13fQeZTwEn927epepXciaV48MTFxBc67HY6QmrqL/7 dnYm51lHJTE4pB+y1eNvqw= X-Received: by 2002:a17:90a:e7c1:b0:36a:8240:2477 with SMTP id 98e67ed59e1d1-3933ed1ba09mr18711493a91.19.1786889506906; Sun, 16 Aug 2026 07:11:46 -0700 (PDT) Received: from smtpclient.apple ([144.52.150.206]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39531fbc08bsm1618477a91.12.2026.08.16.07.11.37 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 16 Aug 2026 07:11:44 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3864.600.51.1.1\)) Subject: Re: [PATCH net-next 13/14] selftests/bpf: Test skb_ext read from sk_skb stream verdict hook From: Jack Wang <163wangjack@gmail.com> In-Reply-To: <20260814-bpf-meta-inside-skb-ext-v1-13-767edd862656@cloudflare.com> Date: Sun, 16 Aug 2026 22:11:23 +0800 Cc: bpf@vger.kernel.org, kernel-team@cloudflare.com, Daniel Borkmann , John Fastabend , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Martin KaFai Lau , Song Liu , Yonghong Song , Jiri Olsa , Emil Tsalapatis , "David S. Miller" , Eric Dumazet , Simon Horman , Jesper Dangaard Brouer , Willem de Bruijn Content-Transfer-Encoding: quoted-printable Message-Id: References: <20260814-bpf-meta-inside-skb-ext-v1-0-767edd862656@cloudflare.com> <20260814-bpf-meta-inside-skb-ext-v1-13-767edd862656@cloudflare.com> To: Jakub Sitnicki , netdev@vger.kernel.org, Alexei Starovoitov , Jakub Kicinski , Kuniyuki Iwashima , Paolo Abeni , Stanislav Fomichev X-Mailer: Apple Mail (2.3864.600.51.1.1) On Fri Aug 14, 2026 at 4:14 PM CST, Jakub Sitnicki wrote: > + n =3D send(p1, test_payload, TEST_PAYLOAD_LEN, 0); > + if (!ASSERT_EQ(n, TEST_PAYLOAD_LEN, "send")) > + goto cleanup; > + > + n =3D recv(c1, buf, sizeof(buf), 0); send() and recv() are stream sockets,so either operation may return a = short count even though this will usually not happen on loopback. Maybe use = send/receive helpers or loop til TEST_PAYLOAD_LEN bytes is a better choice,the blocking = recv() can leave the test stuck instead of reporting a timeout when data path regresses. cheers Jack Wang